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-rw-r--r--include/mqueue.h143
1 files changed, 68 insertions, 75 deletions
diff --git a/include/mqueue.h b/include/mqueue.h
index 7f978ba34..1ccad5bba 100644
--- a/include/mqueue.h
+++ b/include/mqueue.h
@@ -1,9 +1,23 @@
-/*
- * mqueue.h - definitions and function prototypes for POSIX mqueue support.
- */
+/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
#ifndef _MQUEUE_H
-#define _MQUEUE_H
+#define _MQUEUE_H 1
#include <features.h>
#include <sys/types.h>
@@ -12,86 +26,65 @@
#include <bits/siginfo.h>
#define __need_timespec
#include <time.h>
-
-typedef int mqd_t;
-
-struct mq_attr {
- long int mq_flags; /* Message queue flags */
- long int mq_maxmsg; /* Maximum number of messages */
- long int mq_msgsize; /* Maximum message size */
- long int mq_curmsgs; /* Number of messages currently queued */
- long int __pad[4];
-};
+/* Get the definition of mqd_t and struct mq_attr. */
+#include <bits/mqueue.h>
__BEGIN_DECLS
-/*
- * Establish connection between a process and a message queue __name and
- * return message queue descriptor or (mqd_t) -1 on error. __oflag determines
- * the type of access used. If O_CREAT is on __oflag, the third argument is
- * taken as a `mode_t', the mode of the created message queue, and the fourth
- * argument is taken as `struct mq_attr *', pointer to message queue
- * attributes. If the fourth argument is NULL, default attributes are used.
- */
-extern mqd_t mq_open(const char *__name, int __oflag, ...) __THROW;
-
-/*
- * Remove the association between message queue descriptor __mqdes and its
- * message queue.
- */
-extern int mq_close(mqd_t __mqdes) __THROW;
-
-/* Query status and attributes of message queue __mqdes */
-extern int mq_getattr(mqd_t __mqdes, struct mq_attr *__mqstat) __THROW;
-
-/*
- * Set attributes associated with message queue __mqdes and if __omqstat is
- * not NULL also query its old attributes.
- */
-extern int mq_setattr(mqd_t __mqdes,
- const struct mq_attr *__restrict __mqstat,
- struct mq_attr *__restrict __omqstat) __THROW;
-
-/* Remove message queue named __name */
-extern int mq_unlink(const char *__name) __THROW;
-
-/*
- * Register notification upon message arrival to an empty message queue
- * __mqdes
- */
-extern int mq_notify(mqd_t __mqdes, const struct sigevent *__notification)
+/* Establish connection between a process and a message queue NAME and
+ return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
+ the type of access used. If O_CREAT is on OFLAG, the third argument is
+ taken as a `mode_t', the mode of the created message queue, and the fourth
+ argument is taken as `struct mq_attr *', pointer to message queue
+ attributes. If the fourth argument is NULL, default attributes are
+ used. */
+extern mqd_t mq_open (const char *__name, int __oflag, ...) __THROW;
+
+/* Removes the association between message queue descriptor MQDES and its
+ message queue. */
+extern int mq_close (mqd_t __mqdes) __THROW;
+
+/* Query status and attributes of message queue MQDES. */
+extern int mq_getattr (mqd_t __mqdes, struct mq_attr *__mqstat) __THROW;
+
+/* Set attributes associated with message queue MQDES and if OMQSTAT is
+ not NULL also query its old attributes. */
+extern int mq_setattr (mqd_t __mqdes,
+ const struct mq_attr *__restrict __mqstat,
+ struct mq_attr *__restrict __omqstat) __THROW;
+
+/* Remove message queue named NAME. */
+extern int mq_unlink (const char *__name) __THROW;
+
+/* Register notification issued upon message arrival to an empty
+ message queue MQDES. */
+extern int mq_notify (mqd_t __mqdes, const struct sigevent *__notification)
__THROW;
-/*
- * Receive the oldest from highest priority messages in message queue
- * __mqdes
- */
-extern ssize_t mq_receive(mqd_t __mqdes, char *__msg_ptr, size_t __msg_len,
- unsigned int *__msg_prio);
+/* Receive the oldest from highest priority messages in message queue
+ MQDES. */
+extern ssize_t mq_receive (mqd_t __mqdes, char *__msg_ptr, size_t __msg_len,
+ unsigned int *__msg_prio);
-/* Add message pointed by __msg_ptr to message queue __mqdes */
-extern int mq_send(mqd_t __mqdes, const char *__msg_ptr, size_t __msg_len,
- unsigned int __msg_prio);
+/* Add message pointed by MSG_PTR to message queue MQDES. */
+extern int mq_send (mqd_t __mqdes, const char *__msg_ptr, size_t __msg_len,
+ unsigned int __msg_prio);
#ifdef __USE_XOPEN2K
-/*
- * Receive the oldest from highest priority messages in message queue
- * __mqdes, stop waiting if __abs_timeout expires.
- */
-extern ssize_t mq_timedreceive(mqd_t __mqdes, char *__restrict __msg_ptr,
- size_t __msg_len,
- unsigned int *__restrict __msg_prio,
- const struct timespec *__restrict __abs_timeout);
-
-/*
- * Add message pointed by __msg_ptr to message queue __mqdes, stop blocking
- * on full message queue if __abs_timeout expires.
- */
-extern int mq_timedsend(mqd_t __mqdes, const char *__msg_ptr,
- size_t __msg_len, unsigned int __msg_prio,
- const struct timespec *__abs_timeout);
+/* Receive the oldest from highest priority messages in message queue
+ MQDES, stop waiting if ABS_TIMEOUT expires. */
+extern ssize_t mq_timedreceive (mqd_t __mqdes, char *__restrict __msg_ptr,
+ size_t __msg_len,
+ unsigned int *__restrict __msg_prio,
+ const struct timespec *__restrict __abs_timeout);
+
+/* Add message pointed by MSG_PTR to message queue MQDES, stop blocking
+ on full message queue if ABS_TIMEOUT expires. */
+extern int mq_timedsend (mqd_t __mqdes, const char *__msg_ptr,
+ size_t __msg_len, unsigned int __msg_prio,
+ const struct timespec *__abs_timeout);
#endif
__END_DECLS
-#endif
+#endif /* mqueue.h */